darcy, i think you're relating the 10n0016, and the 10n0026 carts. i replenish those each and all the time. the cartridge needs to no longer have been run empty or have been out of the printer till you're arranged to replenish, or it won't respond to the refilling technique, they're junk in the event that they do no longer seem to be cared for top. first and maximum ideal you could desire to have the ultimate lexmark ink. do no longer use the 'one length fits all' ink replenish equipment. each and each cartridge has variety particular ink synthetic to the ultimate specs of each and every cartridge. IE: 10n0026 ink won't inevitably paintings interior the lexmark 13619hc cart. if the ink is basically too skinny the cartridge will leak. no count if that is basically too thick the printheads will clog. in case you want the ultimate ink, we are in a position to get it for you, basically permit me comprehend. in spite of the undeniable fact that, to replenish the black cart, you in easy terms drill the small hollow that is interior the remarkable and make it basically sufficiently massive to slot on your needle. looking on the remarkable and the printhead (backside) slowly injet the ink. in case you pass too rapid, the ink may well be compelled out the two the remarkable or the backside and make a great inky mess. once you spot the frist sign of ink popping out of the printhead, end. as quickly as that is complete, pull lower back on the needle in easy terms a touch to do away with most of the surplus ink. for the colour you will might desire to pry the remarkable off. slowly inkjet each and each shade interior the corresponding area, lower back looking at the two the remarkable and backside on the comparable time. do no longer forget approximately to tug lower back on each and each shade once you're complete. comparable ingredient with the 1st sign of ink. end. pull lower back. wish this helps. stable success.